Scanning electron microscopy (SEM) and transmission electron microscopy (TEM) are the most commonly used means to analyze the morphology of cathode MATERIAL of LITHIUM ion battery after removal of iron by PTMS LITHIUM COBALT ACID MATERIAL MAGNETIC. Sometimes scanning tunneling microscope (STM) and atomic force microscope (AFM) are also used according to the special requirements of material morphology. Scanning electron microscope (SEM) and transmission electron microscope (TEM) are mainly used in the morphology analysis of cathode materials for lithium ion batteries.
Generally, SEM can only provide micrometer or submicron morphology information of PTMS LITHIUM COBALT ACID MATERIAL MAGNETIC. TEM has higher resolution, which can reach 0.1nm ~ 0.2nm. Besides the morphology analysis of the sample, it can also analyze the crystal structure of the sample.
The specific surface area of cathode material for lithium ion battery is related to the machining properties of the material. Therefore, the specific surface area analysis is also an important part of the physical and chemical properties analysis of lithium ion battery cathode materials. The BET method is used to analyze the specific surface area of cathode material of lithium ion battery.
The principle of BET method is that the sample is put into the sampler and then placed in liquid nitrogen. Under this condition, physical adsorption will occur on the surface of the sample. The equilibrium adsorption pressure is measured by the pressure gauge when the adsorption reaches equilibrium, and the amount of gas adsorbed by the sample is measured by volumetric method or chromatography. Finally, the equilibrium adsorption pressure and the volume of adsorbed gas are put into the BET equation to calculate the specific surface area of the PTMS LITHIUM COBALT ACID MATERIAL MAGNETIC sample.
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